C5 Torque Converter, Lock Up (FM58) Ford C-5 Automatic Transmission Non-Lock-Up Torque Converter Diameter - Bolt Circle to Bolt Circle: 12.750" Bolt Circle To Bolt Circle: 11.375" Mount: 4 Studs, 3/8 x 24 Hub: Milled Flats Pilot: Diameter 1.375" - Length 0.860" Splines: 26 Stall:... Part #: FM58 / DCF56TT Decrease Quantity: Increase Quantity: